[Python-modules-team] Bug#960073: Package:python-pyqt5 Run the example code with Trace and crash (SIGABRT)

[Dmitry Shachnev]

Hi, sorry for the late reply too.

On Mon, Jul 06, 2020 at 02:56:04PM +0800, pengzongli at uniontech.com wrote:
> Hi!
>
> Sorry for my late reply. I preload libGLX_mesa.so.0 , and then run  the code
> on the arm machine is ok.
> I tried to debug it, and then I found something different. The parameter of
> __glXLookupVendorByName is NVIDIA instead of mesa, it will dlopen
> libGLX_nvidia.so.0, but my Graphics Card is AMD, only IibGLX_mesa.so.0 can
> be found locally, so __glXLookupVendorByName failed.

It looks like for some reason your X server returns "nvidia" in response
to glXQueryServerString request.

I would suggest you to try writing a minimal test case that would call
glXQueryServerString (e.g. via libxcb and xcb_glx_query_server_string),
and check what happens. If the value is wrong then maybe open a bug against
the X server.

Exporting __GLX_VENDOR_LIBRARY_NAME=mesa (or whatever) env variable should
override it.

P.S. The glibc patch was accepted upstream, so it will land in Debian packages
sooner or later.

--
Dmitry Shachnev
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